Despite the recent interest in adopting HTML5's video tag, there is still one major problem: there is no mandated standard video codec for the video tag. The two main contestants are the proprietary and patended h264, and the open and free Theora. In a comment on an LWN.net article about this problematic situation, LWN reader Trelane posted an email exchange he had with MPEG-LA, which should further cement Theora as the obvious choice.

By many peoples' standards, it's not mature and not only do the devs have an over-inflated view of its quality, they threw a tantrum when "once burned, twice shy" KDE wrote Phonon with the original intent of it being an API wrapper for GStreamer to ensure API stability for the entire KDE 4.x release cycle.

Unfortunately, I was only able to find that because I remember it being on LWN. I can't get Google to narrow things down enough to find the other two or three which cemented my view of GStreamer developers as immature and with too much ego. (I think it was a post-reply conversation between KDE and GStreamer dev blogs)